DISPOSITIF ELECTRONIQUE POUR SYSTEME DE CABLAGE DE BUS

摘要

An electronic device which improves speed of signal transmission in a bus wiring system by specifying circuit configuration of a driver circuit and transmission line characteristic impedance. An input/output circuit combines a differential driver of current switch type with a bus wiring system having a transmission line for transmitting a differential complementary digital signal and a termination end resistor matching the transmission line. An integrated circuit chip including the differential driver is mounted on a wiring board including the transmission line and the termination end resistor. The transmission line includes wires having an equal length which have characteristic impedance of 25OMEGA or less. In combination with the current switch type differential driver, this transmission line structure restricts attenuation of signal energy during transmission and restricts electromagnetic interference between transmission lines close to each other.